ASCII Table
Complete ASCII encoding reference (0-255) with search, filtering, character conversion, and click-to-copy. Browser-side processing, data stays secure.
| Decimal | Octal | Hex | Binary | Char | HTML Number | HTML Entity | Category | Description |
|---|
Char → ASCII
Conversion Result
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| Char | Decimal | Hex | Octal | Binary | HTML Number | Description |
|---|
💡 Enter keywords in the search box to quickly locate characters, or switch to "Converter" for character ↔ ASCII conversion.
About ASCII Table Lookup Tool
ASCII (American Standard Code for Information Interchange) is a character encoding system based on the Latin alphabet. It uses 7-bit or 8-bit binary numbers to represent 128 or 256 possible characters.
Core Features
- Complete ASCII Table — Covers all codes 0-255, including standard ASCII (0-127) and extended ASCII (128-255)
- Smart Search — Search by decimal (65), hex (0x41), character (A), description (uppercase), range (65-90), or multiple values (65,66,67)
- ASCII Converter — Bidirectional character ↔ ASCII conversion with auto-detection of input type and full base information display
- Quick Reference — Quick reference cards at top for one-click access to most commonly used ASCII codes
- Click to Copy — Click the copy button to copy characters or code values to clipboard
- Keyboard Shortcuts — / Focus search, Esc Clear search
ASCII Encoding Structure
- 0-31 (0x00-0x1F) — Control characters, 32 total, used for device control (e.g., LF line feed, CR carriage return, TAB)
- 32 (0x20) — Space
- 33-47 (0x21-0x2F) — Punctuation marks (! " # $ % & ' ( ) * + , - . /)
- 48-57 (0x30-0x39) — Digits 0-9
- 58-64 (0x3A-0x40) — Punctuation marks (: ; < = > ? @)
- 65-90 (0x41-0x5A) — Uppercase A-Z
- 91-96 (0x5B-0x60) — Punctuation marks ([ \ ] ^ _ `)
- 97-122 (0x61-0x7A) — Lowercase a-z
- 123-126 (0x7B-0x7E) — Punctuation marks ({ | } ~)
- 127 (0x7F) — DEL Delete
- 128-255 (0x80-0xFF) — Extended ASCII (ISO-8859-1), includes European language characters and special symbols
💡 Privacy Guarantee: All data is processed locally in your browser and never uploaded to any server. Using search and conversion features generates no network requests.